Precision punching in high-precision automated production warrants a press feed line custom-made for the job. The press feed line portfolio typically contains three standard models meant for thin, medium, and thick plates. The thick plate model stands as a custom-made, high-powered variation. While the medium and thick plate models are markedly favored and share design similarities, the variance in their pricing puzzles several clients. They speculate whether the price hike is solely due to the augmented motor power. However, the truth is more nuanced – their levelling feeder heads have significantly different constructions.
Under the Hood of the Medium Plate Press Feed Line
The levelling feeder head, the key component of the medium plate press feed line, primarily consists of an upper and lower machine stand. Drive shafts positioned at both ends of the lower stand house numerous roller shafts. Sprockets feature on one side of both the drive shafts and roller shafts, engaging with the chain. This arrangement allows the motor to drive the shafts’ rotation via chain transmission. Guiding rods at each corner of the upper stand connect to a hydraulic cylinder at the top. The cylinder is responsible for lifting the upper stand along the guide rods to create a suitable gap for the insertion of medium-thickness plates. The weight of the upper stand and roller shafts compresses the plates, assisting in levelling and feeding.
The Limitations of the Medium Plate Model
In the medium plate press feed line, the hydraulic cylinder’s role is to create an appropriate gap between the upper and lower stands, leading to a wider gap between the driven and drive gears. Although this design is suitable for medium plates, the space between the gears cannot be excessively large due to spatial constraints. Consequently, the lift distance of the upper stand is limited, rendering it unsuitable for thick plates. A larger gear gap also intensifies the forces on the gear teeth, potentially reducing gear lifespan and compromising the drive gear’s transmission efficiency. This effect, in turn, diminishes the overall performance of the press feed line.
The Advanced Design of the Thick Plate Press Feed Line
The levelling feeder head of the thick plate press feed line follows a distinct structural approach. A primary transmission shaft mounted on the lower stand drives the passive shaft, roller shaft, and support shaft on the upper stand. Another transmission shaft on the lower stand propels the roller shaft and support shaft on the lower stand, creating a larger movement space between the stands. This design caters to the needs of levelling and feeding thick plates, extending gear life, and boosting the feeder’s efficiency.
However, these changes require a major modification of the overall machine structure. The need for higher precision, superior material quality, and additional processing steps considerably escalates the manufacturing costs. Therefore, the extensive cost difference between the thick and medium plate press feed lines isn’t just a reflection of increased motor power, but also an acknowledgment of the improved and more intricate design of the thick plate model.